几个分解因式的题,要过程,急!!!
1.(a+b)^3-(a+b)2.3ma^4-3mb^43.a^2(x-y)+b^2(y-x)4.x^4-x^4y^4要过程谢谢...
1. (a+b)^3-(a+b)
2. 3ma^4-3mb^4
3. a^2(x-y)+b^2(y-x)
4. x^4-x^4y^4
要过程 谢谢 展开
2. 3ma^4-3mb^4
3. a^2(x-y)+b^2(y-x)
4. x^4-x^4y^4
要过程 谢谢 展开
2012-03-06 · 知道合伙人教育行家
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1. (a+b)^3-(a+b) = (a+b){(a+b)²-1} = (a+b)(a+b+1)(a+b-1)
2. 3ma^4-3mb^4 = 3m(a^4-b^4) = 3m(a²+b²)(a+b)(a-b)
3. a^2(x-y)+b^2(y-x) = a^2(x-y)-b^2(x-y) = (x-y)(a+b)(a-b)
4. x^4-x^4y^4 = x^4(1-y^4) = x^4(1+y²)(a+y)(1-y)
2. 3ma^4-3mb^4 = 3m(a^4-b^4) = 3m(a²+b²)(a+b)(a-b)
3. a^2(x-y)+b^2(y-x) = a^2(x-y)-b^2(x-y) = (x-y)(a+b)(a-b)
4. x^4-x^4y^4 = x^4(1-y^4) = x^4(1+y²)(a+y)(1-y)
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